Пошаговое объяснение:
А) 4. (12) = 4. 12/99 = 4. 4/33
5) 5.53(35) = 5. (5335 - 53)/9900 = 5. 5282/9900 = 5. 2641/4950
B) 0.(2)+0.21 = 2/9 + 21/100 = 200/900 + 189/900 = 389/900
Пошаговое объяснение:
А) 4. (12) = 4. 12/99 = 4. 4/33
5) 5.53(35) = 5. (5335 - 53)/9900 = 5. 5282/9900 = 5. 2641/4950
B) 0.(2)+0.21 = 2/9 + 21/100 = 200/900 + 189/900 = 389/900